SOLARFOCUS ecotopzero Manual page 49

52 - Limiting thermostat is open
The heating circuit limiting thermostat is open. Heat-
ing water with excessive temperature was diverted to
the heating circuit. The thermostat responds and
stops the heating circuit pump, damage to the heating
circuit is prevented.
Operating fault/defect on one of the components
► Check that the heating circuit pump, heating cir-
cuit mixing valve and heating circuit flow sensor
are working properly.
67 - Room air flap does not open
This message only appears in conjunction with the
optional accessory Room air module for room air flap,
see also separate manual DR-0071.
The room air flap's slide does not open.
Consequence: The burner is no longer ready for oper-
ation.
Mechanical problem possible
► Check for slide obstructions (e.g. snow/ice, dirt).
68 - Room air flap does not close
This message only appears in conjunction with the
optional accessory Room air module for room air flap,
see also separate manual DR-0071.
The room air flap's slide does not close. The burner
remains ready for operation.
Error in the cabling, cable break
► Check cable connection
69 - Error communicating with the room air mod-
ule
This message only appears in conjunction with the
optional accessory Room air module for room air flap,
see also separate manual DR-0071.
Communication error with the electronic module
(which controls the room air flap).
The burner is no longer ready for operation.
Operation manual ecotop-zero, ecotop-light
A fuse in the electronic module is defective
► Check fuse, replace if necessary
Error in the electronic module's power supply
► Check
Faulty bus cabling
► Check cable connection
Incorrect device address set for the electronic
module
► Check
71 - No current flow heat exchanger
72 - Note: No current flow heat exchanger
73 - Fault in reference switch, diverter
This message only appears in conjunction with the
optional accessory Automatic diverter for suction
heads, see also separate manual DR-0004.
During the zero point search of the diverter for suction
heads, the reference switch was not actuated.
The reference switch in the DFSH is defective, or
there is a disruption, short-circuit
► Check switch
Cabling fault between DFSH (reference switch)
and electronic module
► Check cabling
Inaccurate position of the reference switch
► Check switch, for secure seating, mechanical
fault, etc.
Problem with position pin, possible mechanical
fault
► Check position pin (longer clamping pin)
75 - Room temperature sensor assignment
76 - Overtemperature reset triggered
16 Maintenance and cleaning
49